P12FA
Cylinder Deactivation Exhaust Flow Valve Feedback Circuit Incorrect Frequency Bank 2
P12FA is an OBD-II diagnostic trouble code meaning: Cylinder Deactivation Exhaust Flow Valve Feedback Circuit Incorrect Frequency Bank 2. Common causes: exhaust gas flow control valve malfunction, open or short circuit in control circuit. Estimated repair cost: $39–133.
Symptoms
- Check Engine light comes on
- Increased fuel consumption
- Disabling the cylinder deactivation system
- Possible slight power loss
- Possible changes in engine idle speed
Causes
- Exhaust gas flow control valve malfunction
- Open or short circuit in control circuit
- Poor contact in circuit connectors
- Wiring Harness Problems
- Engine control module malfunction
How to Fix
- Check the condition of the exhaust gas flow control valve
- Check the integrity of the control and feedback circuit
- Inspect connectors and contacts for corrosion or damage
- Check valve resistance and operation
- If necessary, replace the valve or repair the circuit
Related codes
FAQ
What does the P12FA code mean?
P12FA is an OBD-II diagnostic trouble code that indicates: Cylinder Deactivation Exhaust Flow Valve Feedback Circuit Incorrect Frequency Bank 2
What causes a P12FA error code?
The most common causes of P12FA include: Exhaust gas flow control valve malfunction; Open or short circuit in control circuit; Poor contact in circuit connectors; Wiring Harness Problems.
How do I fix a P12FA diagnostic trouble code?
To fix P12FA: Check the condition of the exhaust gas flow control valve. Check the integrity of the control and feedback circuit. Inspect connectors and contacts for corrosion or damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P12FA?
Yes, but get it checked soon
How much does it cost to fix P12FA?
The estimated repair cost for P12FA is $39–133. Actual cost depends on your vehicle, location, and labor rates.
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